A. A. Sadovnikov, O. V. Boytsova, “Observing the formation of TiO2 mesocrystals from NH4TiOF3 microparticles using in situ thermo-WAXS measurements”, Mendeleev Commun., 2024, Volume 34, Issue 2,Pages 226

Communications

Observing the formation of TiO₂ mesocrystals from NH₄TiOF₃ microparticles using in situ thermo-WAXS measurements

A. A. Sadovnikov^ab, O. V. Boytsova^cd

^a N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation
^b A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russian Federation
^c Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
^d Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation

Abstract: Real-time in situ X-ray analysis was used to shed light on the topotactic transformation of NH₄TiOF₃ into nanostructured TiO₂ mesocrystals. Specifically, for the system formed in the presence of the PEG-2000 templating polymer, XRD analysis showed that the overall transformation occurs through four separate transitions, consistent with previous reports. The applicability of synchrotron wide-angle X-ray scattering (WAXS) to real-time in situ analysis has enabled precise temperature mapping of these four transitions and the identification of stability boundaries for the first time.

Keywords: anatase, TiO₂, mesocrystal, composites, WAXS, NH₄TiOF₃.

Language: English

DOI: 10.1016/j.mencom.2024.02.022

	*Supplementary materials:*
		Supplementary_data_1.pdf	2.6 Mb